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20 Cards in this Set
- Front
- Back
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Projectile
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an object that is thrown
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Terminal Velocity
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the greatest velocity a falling object can achieve
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Friction
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a force that one surface exerts on another surface when they rub against each other
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Inertia
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the tendency of an object to resist change in its motion
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Newton
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a unit of measure that equals the force required to move 1 kilogram of mass 1 meter per second
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Fluid Friction
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friction that occurs as an object moves through a fluid
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Gravity
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the attractive forces between objects
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law of conservation of momentum
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the rule that in the absence of outside forces, the total momentum of objects that interact does not change
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weight
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the force of gravity on an object at the surface of a planet
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air resistance
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a type of fluid friction exerted on objects as they fall through the air
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balanced forces
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equal forces acting on an object in opposite directions
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rolling friction
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friction that occurs when an object rolls over a surface
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mass
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the amount of matter in an object
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momentum
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the product of an objcets velocity and mass
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static friction
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the friction that acts on objects that are not moving
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force
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a push or a pull
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net force
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the overall force on an object when all the individual forces acting on it are added together
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unbalanced forces
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forces that produce a nonzero net force, which changes an objects motion
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free fall
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the motion of a falling object when the only force acting on it is gravity
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sliding friction
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friction that occurs when one object slides over another
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